A fast-growing UK clean-energy start-up is developing an innovative domestic thermal energy storage system. As they move from prototype to pre-production, they are seeking an experienced Electronics & Embedded Systems Engineer to take ownership of the full control-electronics design for a safety-critical, mains-powered appliance designed for UKCA/CE certification and future volume manufacture. Key Responsibilities for Electronics & Embedded Systems Engineer System Architecture Define overall electrical & control system architectureSelect MCU / embedded platform (e.g. STM32, NXP, ESP32)Develop power distribution & protection strategyIntegrate sensors, actuators, heaters & communication interfaces PCB Design Schematic capture & multi-layer PCB layoutIndustrial, manufacturable design (DFM/DFA principles)Component selection with availability, cost & reliability in mindDesign for EMC, thermal performance, and safety compliance Power Electronics & Safety AC mains interfacing and load/heater controlUse of relays, SSRs or contactors as appropriateImplement isolation, fusing, grounding & fault-detection strategiesDesign aligned with CE/UKCA safety and compliance requirements Embedded Firmware Develop firmware architecture and core control logicImplement local/remote communicationsDiagnostics, fault handling & firmware update strategy Prototyping & Testing Support prototype builds and system bring-upHands-on debugging & optimisationClose collaboration with mechanical & systems engineering teams Manufacturing & Compliance Optimise design for manufacturing & assemblyBOM optimisationSupport pre-compliance testing and certification processesProduce handover documentation for manufacturing partners Essential Experience of the Electronics & Embedded Systems Engineer Proven experience designing mains-powered electronicsPCB design for domestic or industrial appliancesEmbedded firmware development (STM32, NXP, ESP32 or similar) This is a key role within a highly technical engineering team, ideal for an Electronics & Embedded Systems Engineer who enjoys full life cycle ownership and wants to shape a next generation low carbon technology. ASC Connections Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. We are committed to equal opportunity and diversity.